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Infrared spectra of mass-selected Mg+-H2 and Mg +-D2 complexes

Journal Article


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Abstract


  • Rotationally resolved infrared spectra of Mg+-H2 and Mg+-D2 are recorded in the H-H (4025-4080 cm-1) and D-D (2895-2945 cm-1) stretch regions by monitoring Mg + photofragments. The Vhh and Vdd transitions of Mg+-H2 and Mg+-D2 are red-shifted by 106.2 ± 1.5 and 76.0± 0.1 cm-1 respectively from the fundamental vibrational transitions of the free H2 and D 2 molecules. The spectra are consistent with a T-shaped equilibrium structure in which the Mg+ ion interacts with a slightly perturbed H2 or D2 molecule. From the spectroscopic constants, a vibrationally averaged intermolecular separation of 2.716 A° (2.687 A°) is deduced for the ground state of Mg+-H2 (Mg +-D2), decreasing by 0.037 A° (0.026 A°) when the H2 (D2) subunit is vibrationally excited.

UOW Authors


  •   Bieske, Evan J. (external author)
  •   Dryza, Viktoras (external author)
  •   Poad, Berwyck L. J.

Publication Date


  • 2009

Citation


  • Dryza, V., Poad, B. L. & Bieske, E. J. (2009). Infrared spectra of mass-selected Mg+-H2 and Mg +-D2 complexes. The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory, 113 (1), 199-204.

Scopus Eid


  • 2-s2.0-62149083756

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=7963&context=scipapers

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/4620

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 199

End Page


  • 204

Volume


  • 113

Issue


  • 1

Abstract


  • Rotationally resolved infrared spectra of Mg+-H2 and Mg+-D2 are recorded in the H-H (4025-4080 cm-1) and D-D (2895-2945 cm-1) stretch regions by monitoring Mg + photofragments. The Vhh and Vdd transitions of Mg+-H2 and Mg+-D2 are red-shifted by 106.2 ± 1.5 and 76.0± 0.1 cm-1 respectively from the fundamental vibrational transitions of the free H2 and D 2 molecules. The spectra are consistent with a T-shaped equilibrium structure in which the Mg+ ion interacts with a slightly perturbed H2 or D2 molecule. From the spectroscopic constants, a vibrationally averaged intermolecular separation of 2.716 A° (2.687 A°) is deduced for the ground state of Mg+-H2 (Mg +-D2), decreasing by 0.037 A° (0.026 A°) when the H2 (D2) subunit is vibrationally excited.

UOW Authors


  •   Bieske, Evan J. (external author)
  •   Dryza, Viktoras (external author)
  •   Poad, Berwyck L. J.

Publication Date


  • 2009

Citation


  • Dryza, V., Poad, B. L. & Bieske, E. J. (2009). Infrared spectra of mass-selected Mg+-H2 and Mg +-D2 complexes. The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory, 113 (1), 199-204.

Scopus Eid


  • 2-s2.0-62149083756

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=7963&context=scipapers

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/4620

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 199

End Page


  • 204

Volume


  • 113

Issue


  • 1